Sulfur-burner.



G. A. STEBBINS.

v SULFUR BURNER.

APPLICATION FILED MAR. 9, 1909.

934,700. Patented sepnzl, 1909.

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SULFUR BURNER.

l APPLICATION FILED MAR. 9, 1909. 984,700. Patented sepnzl, 1909.

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UNITED sTATEs PATENT oEErcE- GEORGE ALFRED STEBBINS, OF WATERTOWN, NEW YORK.

SULFUR-BURNER.

Specication of Letters Patent. Ptqgmtgd Spt, 21, 11909 Application led March 9, 1969. Serial No. 482,270.

To all 'whom 'it may concern:

Be it known that l, GEORGE A. SrniNs, a. citizen of ihe United States, residing at ll'atertown, in the county of Je'erson and State of New York, have invented a new and useful SulfunBurner, of which the following is a specification.

This invention relates to sulfur burners, and is designed as an improvement upon an apparatus of this character tor which l received Letters Patent ot the United States, dated December l5, 1908, No. 906,574.

@ne object ot the present invention is, in a readye practical, continuous and certain manner, automaticallyto supply molten sultur, as requisite, to the burner, and to cti'ect this wnnout opening the door at the front end the machine, whereby the air supply to the burner will be maintained constant at all times, with the result that the quality of sulfur dioxid produced will be uniform in A further object is to improve and render more ecient the air supply controlling means at the rea r of the burner, whereby to secure the most perfect oxidation ot the gases.

A. still further object is to dispense with the ordinary stationary chamber or socalled combustion-box in which heretofore the regulation and oxidation of the gases has been eii'ected, and in lieu thereof to provide a single revolving cylinder constructed insuch a manner as to insure the proper mixture of the air with the sulfur dioxid under the bemperature prevailing within the burner, this havin been found to be the most favorable and e cient way to secure perfect oxidation.

lVith the above and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of a sulfur burner, as will be hereinafter fully described and claimed.

In the accompanying drawings forming a part of this specification, and in which like characters of reference indicate corresponding arts, Figure l is a view in vertical longitudinal section through a sulfur burner constructed in accordance with the present invention. Fig. 2 is a front elevation. Fig. 3 is a rear elevation. Fig. 4 is a transverse sectional view on the line 4-4 of Fig. 3, and looking in the direction of the arrow thereon. Fie'. 5 is a detail view, on an enlarged scale, olP a damper arranged at the rear of the apparatus. Fig. 6 is a top plan view, showing. the mechanism for revolving the burner. Fig. 7 is a front elevation partly 1n section, displaying more clearly the connectionbetween the burner and its driving mechanlsm. F ig. 8 is a transverse sectional v1ew,on an enlarged scale, taken on the line 8-8 of Fig. l.

The cylinder l may be of the usual or any preferred construction, the front end of which is closed by an outwardly dished head 2, and its rear endby a similarlyv shaped head, comprising two sections 3 and 4, each of' which is provided with a peripheral flange 5 and 6 respectively, held iirnily assembled by bolts 7. These two `flanges and a. flange 8 on the head 2 form tracks that are designed to engage rollers@ carried by shafts l0 and 1]. mounted in suitable bear- `ings on the base l2. The shatt ll carries a bevel gear 13 which meshes with a bevel pinion 14 carried by a countershatt l5 journaled in suitable bearings 1G. rlhe shaft l5 carries a gear 17 that meshes with a pinion 18 carried by a shaft 19 journaled in bearings 20, the latter shaft ,having keyed to it a pulley 2l that is driven by a belt (not shown) from a suitable source ot power, and transmits motion through the train ot' gears and pinions described to the shaft l1, which Iin turn revolves the cylinder.

Projecting through a central opening in the head 2 is a throat-piece 22 which is of truncated cone shape, and is closed at its outer and smaller end by a hinged door 23 which is provided with a series of draft openings 24 arranged in a circle and controlled by an annular rotary damper 25 of the usual or any preferred construction. The head 2 is provided with an annular outstanding lange 26 defining a seat to receive a circumferential flange 27 on the throat 22, and to -hold'the latter flange in the seat, an annulus 28 is provided which is held assembled with the flange 26 by bolts 29. By this arrangement the throat and head 2 will be operatively combined and a seal will be provided to check the escape of ases. Surrounding the throat, and preterably cast lintegral therewith is a hopper 30, the top 31 of which is preferably curved, and the sides of which are vertical and curved inward at their lower ends and form in conjunction with the throat two sulfur receiving compartments 32 that communicate with the under side of the throat through openings with a plurality 33. The mouth of the hopper is closed by slide doors 34 that work iii-guides 35 in the walls of the mouth. The bottom of the hopper is formed by the upper wall of the throat and the' latter is provided with a trough or chute 36 that projects into the head 2, as clearly shown in Fig. 1. The' throaty and hopper are supported by a pedestal 37 mounted upon a concrete or other base 38. f'

The section 3 of the rear head includes an annular partition 39 of the same diameter as the cylinder and provided at its centerv with an opening, the walls of which are Vin operative position by being clamped be-` tween the two flanges 5 and 6 ferred manner.

, The section 3 is provided with a plurality in any preof inwardly projecting `nozzles 45 the inlet.

ends of which are controlled by dampers 46, thereby to permit air in regulated quantity to be su plled to the chamber 47 formed by the partition 39 and late 43.

The chamber 48 ormed by the plate 43 and head section 4, is provided in its end of orices 49 passage through which is controlled by dampers 50.

The gas from the chamber 48 discharges `into a chamber 51 having an extension 52 with which connects the pipe or flue that conducts the gas to the place of use. The rear end of the chamber 1s provided with a late 52 having Ventilating o'riices that are controlledby a damper 53.

To connect the neck 54 of the chamber 51 with the head 4, the latter is provided with an outstanding flange 55 defining a seat in which fits a circumferential liange 56 formed on the neck 5,4, an annulus 57 bolted to the flange 55 operating `to hold the parts from disconnection and also to form a seal to prevent escape of gas.

It will be noted by reference to Fig. 1 that the orifices 44 of the plate 43 are disposed close to its periphery, and this arrangement will operate to check or retard the escape of gases to the chamber 48, thus to secure effective initial oxidation, which will, in many cases be perfect. This retardation of the gases is further accentuated by disposing the mouth 42 of the baille plate at its center, as this will compel the gases t0 trayel the greatest distance possible before escape to the adjacent chamber.

The means for picking up the molten sulthe walls of which are flared or fur and drop ing it through the air zone consists of a p urality of lon itudinally disposed buckets 58 shown in ig. 4 that are semi-circular in cross section and are 'bolted to the inner wall of the cylinder. But a' single series of these buckets is herein shown, but it is to be understood that'two series,

.oppositely disposed relatively to each other may be employed, as shown in the patent referred to.`

In operation, the sulfur is placedin the hopper and ignited, and as soon as it begins to melt, it runs down the trough 36 and discharges into the cylinder, while the portion that passes to the compartments 32 escapes through the openings 33 to the cylinder.. As the cylinderrevolves, the buckets pick up themolten mass and drop it throu h the current of air supplied through the raft openings24. The gases pass through the cylinder andthrough the opening in the baiile plate and into the chamber 47 where if further oxidation is required, this may be secured by operating the dampers controlling the nozzles 45. From the chamber 47 the gases pass through the openings 44to the chamber 48, where further oxidation may be secured by means of the dampers 50. Thence the gases pass to the chamber 52 where they may be subjected to still further oxidation by operating the dampers 53, and finally escape to the place of use.

The provision of the dampers 53 is merely precautionary, as in effect perfect oxidation has beensecured by the time the gases reach the chamber 52.

From the foregoin description, it will be seen that by the emp oyment of the hop er provision is made to secure the most pertpect oxidation, and also to render unnecessa the opening of the front of the cylinder, w ereby the product will be of uniform character, owing to the fact that the supply of air remains constant.

The improvements herein described-while simple in character, will be found thoroughly efficient for the purpose that is designed, and

will coperate in the production of a highly novel, practical, and commercially successful sulfur burner.

What is claimed is 1. A sulfur burner comprising a cylinder, a'throat projecting into the cylinder through one end of the same, means for supplying air through the throat, and a hopper inclosing the throat and communicating with both the upper and lower portions thereof. p

2. A sulfur burner comprising a rotatable cylinder, a stationary throat opening therein and provided with a feed-trough in its upper side and with air-feed controlling means,

lrand a hopper surrounding the throatand communicatingwith the lower portion of the same and with the feed trough in the upper side thereof.

' tinuously supplying air and'sulfur to one end thereof, and means within the cylinder at the opposite end thereof for retarding the escape of gases and for effecting their thor# ough oxidation.

4. A sulfur burner comprising a rotatable cylinder provided at its forward end with independently operating means for supplying air and sulfur thereto and at its rear end with a plurality of oxidizing chambers each of said chambers having regulable air feed 'cont-rolling means.

5. A sulfur burner. comprising a rotatable cylinder provided at its forward end with independently operating means for supplying air and sulfur thereto, and at its rear end withmeans for retarding the escape of gases and for effecting successive oxidations thereof.

6. A sulfur burner comprising a rotatable cylinder, a stationary throat opening thereinto and provided with a feed trough and with air feed -controlling means, and a hopper inclosing the throat and defining in conjunction therewith sulfur receiving compartments at the sides of the throat that communicate with the lower portion of the same.

7. A sulfur'burner comprising a rotatable cylinder provided at its forward end with means for supplying air and sulfur therewith, of an orifced baille plate located adjacent to the rear end of the cylinder, an oriiced partition arranged back of the baiie plate and formingin conjunction therewith a pair of chambers, and meansfor supplying air in regulable quantities to either of the chambers independently of the other.

8. A sulfur burner comprising a rotatable cylinder provided at its forward endwith means for independently supplying air. and sulfur thereto, of a central oriliced bale plate located adjacent to the rear end'of the cylinder, a clrcumferentially oriiced partition arranged backof the bafHe. plate and forming in conjunction therewith a pair of chambers, and means for supplying air in regulable quantities to either of the chambers independently of the other.

In testimony that I claim the foregoing as my own, I have hereto aiiixed my s1gnature in the presence of two witnesses.

GEORGE ALFRED STEBBINS.

Witnesses:

JAMES MooRE CHILES, vEMILY NrELsoN HATCH. 

